GOOD news, fans of Martin Short’s porky celebrity interviewer, Jiminy Glick: There’s a big-screen version of the short-lived Comedy Central series, and both of you will enjoy it.

Most others will find that Short’s sweaty hyperventilating in his fat suit delivers only stop-and-go laughs. And his mugging makes Robin Williams look like John Gielgud.

As Glick, a rotund parody of a suck-up chat-show host, Short bounds around the Toronto Film Festival improvising gags à la “Best in Show.”

(One of that film’s funniest performers, John Michael Higgins, is on hand as a maniacal European celebrity handler who keeps swearing, “I am no homoist.”)

There’s no plot except for a running parody of “Lost Highway” and other films of David Lynch, who (as played by Short) stops in to deliver a pretentious deconstruction of the proceedings, but warns that he has to wrap things up in time for his 11 p.m. pedicure.

A highlight: Glick’s interview with Steve Martin. “You’re one of the few Jews who’s really made it in the business,” notes the fat man.

On the subject of commie infiltration of Hollywood, Martin vows, “I would never name names.”

“Like if I said Meg Ryan?” says Glick.

“Communist,” says Martin.

But Short’s lisping (“Oh, thith ith jutht thuper!”) and cavorting is just 10 pounds of variety-show sketch in a 300-pound fat suit – though you may disagree if you’re reduced to hysterics by every mention of proctology or mispronunciation of “seminal.”